Inseam-trimming machine.



A. EPPLER.

INSEAM TRIMMING MACHINE.

APPHCATION FILED FEB. 12, 1914.

Patented Jan. 18, 1916.

- 3 SHEETS-SHEET 1.

A. EPPLER.

INSEAM TRIMMING MACHINE.

APPUCATION FILED FEB. 12, 1914.

1,169,070, v Patented Jan. 18, 1916.

3 SHEETS-SHEET 2- COLUMBIA PLANOGRAPH c0., WASHINGTON, D. c.

A. EPPLER..

INSEAM TRIMMING MACHINE.

APPLICATION FILED FEB- 12, 1914.

1,169,070. Patented Jan. 18, 1916.

3 SHEETS-SHEET 3- W I f:::

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mvezzi'on entree snares rarest errrcn ANDREW EPPLER, 0F LYNN, MASSACHUSETTS, ASSIGNOR T0 UNITED SHOE MACHINERY COMPANY, OF PATERSON, NEW JERSEY, A COREPORATION OF NEW JERSEY.

Specification of Letters Patent.

INSEAM-TR-IMMING MACHINE.

Patented Jan. 18, 1916.

Application filed February 12, 1914. Serial No. 818,280;

7 '0 all whom it may concern:

Be it known that I, ANDREW EPPLER, a citizen of the United States, residing at Lynn, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Inseam-Trimming Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The invention relates to inseam trimming machines, and more particularly to machines adapted for use in trimming the inseams of welted shoes.

The objectof the invention is to provide a novel and improved construction and arrangement of the devices for guiding and feeding the shoe to the trimming knife, which will enable the inseam to be rapidly and uniformly trimmed without danger of cutting into the stitches, and without the exercise of a high degree of skill and care on the part of the operator.

To this end the invention consists in the features of construction and combinations of parts hereinafter described and set forth in the claims.

The features of the invention will be readily understood from an inspection of the accompanying drawings and the follow ing detailed description oft-he machine illustrated therein.

In the drawings, Figure 1 is a side elevation of an inseam trimming machine embodying the invention in its preferred form; Fig. 2 is a front elevation of the machine; Fig. 3 is a front sectional elevation, certain of the parts being omitted to show the devices back of them; and Fig. i is a detail sectional plan view showing the mechanism for reciprocating the grinding wheel.

in the machine shown in the drawings the trimming knife 2 is dished or cupshaped, and the projecting materials of the inseam are fed againstthe edge of the knife by a feed roll l having a frusto-conical periphery for engaging the welt, and having a dished or concaved upper end within which the trimming knife runs. The trim ming knife is also frusto-conical, so that its cutting edge may run close to the edge of the feed roll directly above the point of engagement of the roll with the welt. The edge of the feed roll may therefore be of the requisite thickness to act on the welt close to the seam, and accurately position the outside of the seam with relation tothe cutting edge of the knife. The welt is pressed against the feed roll by a frusto-conical roll 6 which is shaped to enter the crease be tween the upper and welt, and to act as a crease guide for guiding the shoe. The peripheries of the rolls 4 and 6 are preferably so shaped and arranged that they grip the welt only near its base or close to the inseam. This enables the shoe to be readily turned bythe operator, and also enables the rolls to act efficiently and without undue strain upon welts which have been drawn tightly abut the toe of the shoe in sewing the inseam.

The inner side of the inseam is engaged.

by the periphery of a small roll 8 which is mounted to turn about a substantially vertical axis, and is so arranged that its lower end acts as an inside or channel guide for engaging the sole close to the inner side of the seam, and accurately positioning it with relation to the cutting edge of the knife. The roll is forced yieldingly toward the feed roll and crease guide, so that it continually presses against the seam, and may yield to accommo ate itself to variations in the thickness of the seam at different parts of the shoe. The roll not only acts as an inside guide for gaging the depth of the cut, but also acts to lift and guide the lining and upper as they approach the cutting point.

The roll is also preferably driven to assist in the feed of the shoe, and is preferably provided with spiral corrugations or ribs to improve its lifting and straightening action on the lining and upper. An outside guide 10 is also arranged above the edge of the feed roll 4 in position to lift and support the upper and lining as they approach the cutting point. This guide preferably has an extension 12 (Fig. 3) which projects over the edge of the knife and supports the projecting materials of the inseam against the drag. of the knife directly above and beyond the cutting point. The lower edge of the guide may and preferably does overlie the welt inside the edge of the feed roll, and cooperates with the feed roll in positioning the seam with relation to the knife edge.

The materials cut from the inseam by the knife are drawn away through a chip. chute i l which overlies the feed wheel and has an open side facing the knife. The chip chute is preferably so formed that its lower end forms the guide 10, and its upper end .is arranged to communicate with a passage 'way 30 on the machine frame, and may be adjusted by a screw 32 to bring the lower edge of the knife into proper position with relation to the feeding and guiding devices. In order that the knife edge at the cutting point may be maintained in proper relation to the feeding and guiding devices as the knife wears away, the guideway for the knife carriage is arranged parallel to the lower side of the knife.

As shown, the feed roll 4 is secured upon the upper end of an inclined shaft 34mounted in a supporting frame 36 and continuously driven from the driving shaft 38 through spiral gears 40 and 42. The crease guide roll 6 is mounted upon an arm 44,

which is secured to the upper end of a slide 46 mounted to move vertically in a guideway formed in the support 36. The slide 46 is forced upward to press the crease guide roll against the lower side of the welt by a spring 48. The tension of the spring may be adjusted by, an adjusting screw 50, the upper end of which engages a disk 52 upon which the lower end of the spring is supported. The lowerend of the roll carrying arm 44 is bifurcated, and engages two transverse grooves formed in the upper end of the slide 46. The arm may be adjusted laterally to properly position the crease guide roll, and is held in adjusted position on the slide 46 by a clamping screw 54. The chip chutel4 and guides 10 and 12 are also mounted on the support 36. The support is provided with two projecting arms journaled upon the shaft 38. and fits between two guiding surfaces 56 formed on the sides of the machine frame. The support may be adjusted about the shaft 38 to move the guiding devices carried thereby vertically with relation 'to the knife edge,

' by an adjusting screw 58, the head of which engages a grooved block 60 pivoted in the side of the support. The support is firmly held in adjusted position by a clamping screw 62.

The roll 8 is secured or formed on the lower end of a shaft 64 journaled in a carriage 66 which is mounted to slide vertically in a supporting arm 68. The roll carrying slide may be adjusted vertically to vary the position of the roll 8 in accordance with the depth of cut desired by an adjusting screw 70 which is screwed into the lower end of the supporting arm 68, and. is provided with a head engaginga groove in the slide. The slide is secured in adjusted position by a clamping bolt 72. The upper end of the roll carrying shaft 64 is provided with a polygonal head loosely engaging a corresponding recess in the lower end of a collar 74 which is secured to the lower end of a shaft 76 mounted in the carrier arm.

The shaft 76 is continuously driven during the operation of the machine through a bevel gear 78 mounted upon a stud 80 and engaging a pinion 82 on the upper end of the shaft. The bevel gear is driven from the shaft through a shaft 84, one ,end of which carries a pinion 86 engaging the gear, and the other end of which is connected with the shaft 22 through spiral gears 88. The roll carrying arm 68 is provided at its upper end with bearings 90 and 92, one of which is journaled on the stud 80, and the other of which is journaled on a stud 94 arranged in line with the stud 80. The roll supporting arm is forced in a direction to pressthe roll 8 laterally against the inseam by a bell crank lever 96 journaled on the stud 94, and having its forward end connected to the roll carrying arm by a spring pressed pin 98 which is mounted in the arm 68 and engages a hole in the lever 96. The pin is provided with a handle 100 projecting through a slot in the roll supporting arm,so that it may be readily disengaged from the lever 96 when it is desired to swing the roll carrying arm up outv of the way to give access to the interior of the knife. The rear end of the bell crank lever 06 is acted upon by a spring 102 which normally forces the roll 8 against the inseam. The upper end of the spring bears against an adjusting screw 104 on the lever 96 by which the tension of the spring may be a justed.

The front side of the knife isv covered and protected by a guard plate 106 secured to the front of the roll supporting arm 68, and arranged to lie in front of and partially close the open end of the knife. The guard plate is also provided with a flange 108 overlying the knife, and the lower end of this flange is preferably extended'into a position to act as a guide 110 to the rear of the guide roll 8. This guide plate underlies the edge of the knife inside of the cutting point, and assists in maintaining the work in proper relation to .the ,cuttlngedge.

ranged to extend beyondthe knife edge, and

has

-- opening under the point of engagement of the upper wall is cutawayto provide an the grinding wheel, with the knife. The emery and dust from the grinding wheel 18 by this construction and arrangement drawn into the chip chuteand carried away with the materials trimmed from the inseam. The grinding wheel 1S securedupon them Y is reciprocated to move the wheel back and forth across the knife through a lever 120. The lower end of the lever is provided with a projecting tooth 122 engaging a recess in the sleeve, and the upper end of the lever engages a rod 124 mounted to slide longitudinally in the studs and 94. The end of the lever is held in engagement with the rod by a spring 126. The rod is reciprocated by a cam groove 128 formed in the gear 78, and engaged by a roll on a slide .130 which is connected with the rod by clamping arms 132 (Fig. 4). The carrier sleeve 116 for the grinding wheel and the lever 120 are mounted in an arm 134 journaled on the outer end of the stud 94. The arm may be adjusted to bring the grinding wheel against the knife by a screw 136 arranged to engage a segmental nut 138 secured to the rear side of the arm. The arm may be secured in ad- 'justed position by a clamping screw 140 which passes through a curved slot 142 in the arm, and is provided with a head between which and the bearing surface on the machine frame the arm fits.

' The crease guide roll may be moved downward by the operator to facilitate the insertion of the work by a lever 144, the front end of which overlies a lug on the back of the slide 46, and the rear end of which carries a stop screw 146 for determining the upper position of the crease guide roll. The

lever is arranged to be engaged by a boss 148 which projects laterally from the upper end of a link 150 connected with a treadle. The upper end of the link is also connected through a yoke 152 and link 154 with the rear end of the bell crank lever 96, so that the roll carrying arm 68 and the parts carried thereby may be swung outward by the depression of the treadle in order to facilitate the insertion of the work. The upper end of the link 158 is provided with a slot within which the end of the lever 96 plays, so that the lever may move independently of the link when the roll 8 yields to accom-v modate different thicknesses of material. The yielding movements of the roll 8 do not therefore affect the link 154, and are not transmitted to the crease guide roll.

While it is preferred to employ the specific construction and arrangement of parts shown and described, it will be understood that this construction andarrangement is r not essential to the broader features of the invention, and may be varied or modified without departing therefrom.

Having explained the nature and object oftheinvention, and specifically described one form of machine in which it may be embodied, what is claimed is 1-.-

1. An inseam trimming machine, having, in combination, a crease guide and feed roll for engaging "opposite sides of the welt, a trimming knife, and a laterally yielding guide for engaging the sole and the inside of the inseam.

2. An inseam trimming machine, having,

in combination, a crease guide, a frusto,

conical feed roll for engaging the welt, a

trimming knife having its cutting edge acting across the edge of the roll adjacent to its point of engagement with the welt, and a laterally yielding guide for engaging the sole and inside of the inseam.

3. An inseam. trimming machine, having,

.in combination, a crease guide, a frusto conical feed roll for engaging the welt, a

trimming knife having its cutting edge acting. across the edge of the roll adjacent to its'point of engagement with the welt, a laterally yielding guide for engaging the sole and inside of the inseam, and a guide above the edge of the feed roll for lifting and supporting the upper.

4. An inseam trimming machine, having, in combination, a crease guide, a frustoconical feed roll for engaging the welt, a trimmingknife having its cutting edge acting across the edge of the roll adjacent to its point of engagement with the welt, a laterally yielding guide for engaging the sole and inside of the inseam, and a guide above the edge of the feed roll for lifting and supporting the upper having a projection eX- tending over the edge of the knife.

5. An inseam trimming machine, having, in combination, a crease guide roll, a cooperating frusto-conical feed roll having a dished upper end, a frusto-conical knife having its cutting edge acting across the edge of the feed roll adjacent to its point of engagement with the welt, and an inside guide for engaging the sole and inside of the inseam.

6. An inseam trimming machine, having, in combination, a crease guide roll, a cooperating frusto-conical feed roll having a dished upper end, a frusto-conical knife having its cutting edge acting across the edge of the feed roll adjacent to its point of engagement with the welt, an inside guide roll'for engaging the sole and inside of the inseam, and mechanism for rotating the inside roll.

7. An inseam trimming machine, having, in combination, a trimming knife, feed rolls engaging the welt, a vertical roll engaging theinner side of the inseam, and means for I rotating" the inner roll and forcing it: yard ingly toward the feed'rolIs:

8. An inseam trimming machine, hay-' ing, in combination, a trimmingknife, guTdknife having its edge acting across'the edge of the feed roll adjacent to itsipoint of engagement with the welt, an inside guide roll, and mechanism. forrotating the inside roll and, forcing it toward the feed roll.

10. Aninseam trimming machine, having,

in combination,-v a trimming knife, guiding and feeding devices arranged. on opposite sides of the welt,.an .insideiguid'e." roll having spiral ribs,- and mechanism for; rotatingthe roll.

11. An inseamtrimming machine, having, 1

in combination, a crease guide, a frustoconical feed roll for engagingv the-welt having a; dished upper end, a knife having its edgeacting across thezedge of the feed roll adjacent to its point of engagement withthe welt, an inside guide roll, mechanism for rotating the inside roll and forcing it to-- ward thefeed roll, and an-upper guide above the edge of the feed roll;

12. An inseam trimming machine, having, in combination, a crease guide, a frustoconical feed roll for engaging, the. welt having. a dishedup-per end, a knifev having its edge acting. across the edge of the feed roll adjacent to itspoint of engagement with the Welt, an inside guide roll,

mechanism for rotating the inside roll and forcing it toward the feedroll, an upper guide above the. edge of the feed r0 1, anda sole guide underlying the knife edge beyond the insideroll.

13. An: inseam trimming machine, having, in combination, a crease guide, a frust'oconical feed roll having a dished upper end, ,a'cup shaped knifehaving its edge acting across the edge of the feed roll adjacent to its point of. engagement with the welt, and a chipchute overlying. the feed roll having an open side facing the knife.

14. Anvinseam trimming machine, having,.

in combination, a crease guide, a frustoconical feed roll having adishedrupper end,

a cup shaped knife having its edge acting across the edge of the feedroll adj acent'zto its point of engagement with the welt, and, a chip chute facing the knife above the feedroll and having its end arranged to act'as a guide at theedge of the feed roll.

Gopicofthis Patent m'aly be'obtained'for meta 15. inseam trimming machine, having, in combination; a cup shaped trimming knife, means for guidingand feeding" the shoe, a grinding wheel, and'a chip chute facing the knifean'd". having-an opening ad jacent to-thegrinding wheel;

inseam trimming machine, having, in combination, a crease guide, a frustoco'n'icat feed roll, a trimming knife having its edge"acting acrossthe edge of the feed roll" adjacent to its point of engagement with the roll, a guide roll inside the in seam, means forrotating the guide roll, and means for adjusting the; crease guide and feed roll vertically to vary the depth-of cut.

1 7. inseam: trimming machine, having, in combination,- a crease guide, a frustoconical feed roll, trimming knife having its edge acting across the edge of the feedroll. adjacent to its" point of engagement with the roll, a guide roll inside the inseam,

means for rotating-theguide roll, and-means" for adjustingtheguide roll vertically to vary thedepth' of cut."

18. An inseamtrimming machine, having, in" combination, a laterally adjustable crease guide roll,'.a frusto-conical feed: roll, trimming'. knife having its edge acting a'cross' the edge of. the feedlroll adjacent toitspoint" of engagement with the Welt, a: guide roll inside the'inseam; and" means for adjusting the rolls vertically to vary thedeptlr of cut.

19. An inseam trimming -machine',- having,-

in combination; a frustogconical trimming knife,,means for guiding'and feedingthe shoe, anda knife carriage adjustable in the line parallel to the periphery of the knife back of the cuttingpointr 7 20; An. inseam trimming machine, having, 1n combination, a: rotary trimming. knife,

guiding and feeding devices including aguidefor engagingthe inside of the inseam, a support for the" guide mountedformovement to and from position in. front of the knife-and a guard plate' on the support hav ing. aflange overlyingthe periphery of the knife.

21. An inseam trimmingmachine, having;

in combination, a'trim'ming knife, and guidingand feeding devices including fru'stoconical rolls, the eripheries of which are arranged to grip tiebase of the weltonly. 22. Aninseam trimming'machine, having, in. combination, a rotary'trimming; knife, rotary feed members engaging opposite sides of the welt in front of the knife, a channel guide, for pressing 1 the shoe toward the feed members, and means for actuating the-channeliguide to feed .theshoe; ANDREW EPPLER.

Witnesses CHESTER E." Booms,- ABBIEL. FREAK; 

